The FFDCMAXLOGSIZE option specifies the size for the first failure data capture (FFDC) log file.
The FFDC log file is used to gather diagnostic information about the server. When an error occurs, data about the error is written to the FFDC log file. This information can be provided to IBM Support to help diagnose problems.
To allow the size of the log file to grow indefinitely, specify a value of -1. To disable the log, specify 0.
ffdcmaxlogsize 2000